package com.atguigu.springcloud.controller;

import com.alibaba.csp.sentinel.annotation.SentinelResource;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import com.atguigu.springcloud.entities.CommonResult;
import com.atguigu.springcloud.entities.Payment;
import com.atguigu.springcloud.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;

/**
 * @PROJECT_NAME: cloud2020
 * @DESCRIPTION:
 * @Author: csc
 * @DATE: 2023/4/4 11:09
 */
@RestController
@Slf4j
public class CircleBreakerController {

    //服务提供者
    public static final String SERVICE_URL = "http://nacos-provide-payment";

/*    @Resource
    private RestTemplate restTemplate;

    @GetMapping("/consumer/fallback/{id}")
    //@SentinelResource(value = "fallback") 没有配置
    //@SentinelResource(value = "fallback",fallback ="handlerFallback")//配置fallback 可以管理运行时异常得的返回信息
    //@SentinelResource(value = "fallback",blockHandler ="blockHandler")//配置blockHandler 管理接口违背sentinel配置时返回的接口
    @SentinelResource(value = "fallback",fallback = "handlerFallback",blockHandler = "blockHandler",
                     exceptionsToIgnore = {IllegalArgumentException.class})
    public CommonResult<Payment> fallback(@PathVariable Long id){
        CommonResult<Payment> result = restTemplate.getForObject(SERVICE_URL+"/paymentSQL/"+id,CommonResult.class,id);
        if(id == 4){
            throw  new IllegalArgumentException("IllegalArgumentException,非法参数异常...");
        }else if(result.getData() == null){
            throw  new NullPointerException("NullPointerException,该ID没有对应记录,空指针异常");
        }
        return result;
    }*/
    //本例是fallback
    public CommonResult<Payment> handlerFallback(@PathVariable Long id,Throwable e){
       Payment payment = new Payment(id,"null");
        return new CommonResult<>(444,"fallback异常兜底 内容: "+e.getMessage(),payment);
    }


    //blockHandler
    public CommonResult<Payment> blockHandler(@PathVariable Long id, BlockException blockException){
        Payment payment = new Payment(id,"null");
        return new CommonResult<>(444,"blockHandler-sentinel限流,无此流水: blockException"+blockException.getClass().getName(),payment);
    }



    @Resource
    private PaymentService paymentService;

    @GetMapping("/consumer/paymentSQL/{id}")
    public CommonResult<Payment> paymentSQL(@PathVariable("id")Long id){
        return paymentService.paymentSQL(id);
    }




















}
